Hang these eerily beautiful & ghostly orbs from the trees in your yard this year and you'll definitely have the coolest Halloween decorations on the block. They can be made by placing a glow stick inside a water balloon and then putting it inside a stocking.
DIY Medusa Headband. Buy cheap plastic snakes at the dollar store (a few dozen in a pack), wire, a double banded headband, and a can of silver or gold spray paint. Wire the snakes onto the headband and then spray paint the whole thing.